Internal-combustion engine



F. R. PORTER v INTERNAL COMBUSTION ENGINE Filed Mqrch 13, 1924 Jul 27 1926. 1593988 I 1 H V I l In I1! I l I 1 l l J l I I l l I I I i:. I I:

2 I' J i 7i l l .9 I 5 I t 10 6 INVENTOR- e BY ATTORNEYS Patented July '27, '1926.

] UNITED STATES PATENT orrlcai' 1118132 1;. roman, or NEW Yoax, N. Y., assrenon 'roroa'rnn ENGINE nnvnnormam, me, or nnwyonx, n. Y., A CORPORATION or new roam INTE NAL-communion ENGINE.

Application filed March 13, 1924. .Serial No. 699,081.

This invention relates more particularly to internal combustion engines of the rotary disc valve type. 3

One object of my invention is to provide an internal combustion engine of the rotary disc valve type in which the packing ring for the valve disc surrounds the cylinder port,

which packing ring is provided with an oil impregnated self lubricating element of hard material, such as metal, held against the valve disc, thus obviating the necessity of providing a separate supply of oil for the parts at this point.

Another object is to provide a novel resilient means for holding the packing ring in engagement with the rotary valve disc, said means including a compound diaphragm in which the inneredge of one wall of the diaphragm is engaged with the cylinder and the inner edge of the other wall is engaged with the packing ring as, for instance, by being permanently joined thereto, said compound diaphragm serving, because of its structure, to materially reduce its tendency to set and also maintaining its flexibility, thus materially prolongin its life and rendering it readily suscepti le to variations in fluidpressure.

.A further object is to provide certain'improvements in the construction, form .an

arrangement of the several parts.

A practical embodiment of my invention is represented in the accompanying draw-- ings 1n which Fig. 1 represents a detail cross section through an internal combustion eng gine of the rotary .disc valve type with my improvement applied thereto; and Fig. 2 represents an enlarged detail section taken in the plane of the line II-II of Fig. 1.

The rotary. valve 1' is herein illustrated as a rotary disc valve, the disc 2 being provided with a, fluid port 3 thereth'rough. The engine cylinder casing is denoted by and its combustion chamber by 5 This cylinder casing 4 is provided-with an'annu lar'packing chamber 6 opening toward the face of the valvedisc'2; A removable cylinider member 7 is provided 1 with a ort 8 therethrough in communication wit the combustionchamber 5. The port 3' in the valve disc 2 is'arranged-to be brought into and out of communication with the cylinder port 8 as the valveis rotated;

This cylinder member 7 is screw-threaded into the cylinder casing,'as shown at 9, and

at the base of the screw-threaded portionthe member 7 is provided with an annular shoulder 10.

A packing ring .11 member 7 and is located within the packing chamber 6, which packing ring is provided with anannular recess 12 opening through the face of the. ring, within which recess a removable insert 13 is located, which insert projects slightly beyond the face of the packing ring into communication with they face of the valve disc '2.

This insert 13 is composed of an oil imsurrounds the cylinder pregnated self lubricating hard material preferably metal. When this 'oil impregnated element-13 looses its oil content, the

element may be removed and reimpregnated with oil or it may be re laced with a new oil impregnated self lu ricating element. The particular material which I have found advantageous to use is"gena1ite, an improved bearin alloy of synthetic bronze and graphite, mo ded intoshape and having suflicient porosity to absorb from 2% to.

3% by weight of lubricating oil; which 1 material is produced by the General Electric Company ofSchenectady, N. Y

A-com ound diaphragm i the acking chamber 6, which compound diap ragm acts as a resilient means for holds located within I the oil impregnated self lubricating"ele ,ment 13 in engagement with'the face of the valve disc 2. The inner edge of one wall 14 a of this 00111 ound diah'ra'gm is engaged" with the bac wall oft e packing rmg 11 at the inner periphery of the packing ring,

said inner edge being preferably permanently joined to said acking ring to form a-gas tight joint, as, or instance, by welding. The other wall 15-of the compound diaphragm has its inner edge clamped between the shoulder 10.of the cylinder memher 7 and the cylinder casing to form a s tight joint, a soft metal washer 16 being preferably inteiiposed between the said inner edge of the cy mder at the bottom of the packing chamber 6.

' that the packing ring and its resilient com-- "F-ronithe above description it will be seen pound- .dlaphragm may be .rea'

or renewal-"or re ir by cylinder member.

I It will also be dilyremoved the removal of the at the proper ipres sur e, notwithstanding the variations in" pressure of thefluid passing through the ports, the pressure ofan-y fluid ,which may leak into 'the interior .of the compound diaphragm being trapped therein and exerting its force equally'against both.

walls thereof. 1 Furthermore, a minimum 80 vention; hence, I 0 not movement of any articular part of the dia phragm' lSIPIQVi ed}. by this compound a?- rangeme'nt, thus preventing any liability of the setting ofthe diaphragm from constant use.

- It: is evident that I this 5 structure may utilized for either'the inlet or exhaust port, '25

or both.

- It is also evident that various changes may be resorted to in the construetiomiorm and. arrangement of the several-parts without de parting from the's irit and'scope of my'inwish to be limited that compound diaphragm provides a very resilient and.

- to the particular embodiment herein shown and described, but- What I claim is 1. In an internal combustion engine, a

c linder, a rotary valve, a packing ring t erefor, and a compound diaphragm having inwardly extended substantially parallel walls, the inner unjoined edges of said walls having as tight joints with the packing -ring an cylinder respectively, said compound diaphragm acting as a resilient means for holding the packing ring in engagement with the ivalve.

2. In an internal combustion engine, a cyl- 1 inder having a port and a packing chamber surrounding said port, a rotary valve having a port, a packing ring located insaid chamber and surrounding said cylinder port, and a compound diaphragm located in said packing chamber and acting as a-resilient means for holding the packing ring in enga ement with the valve, said com ound diap ragm having inwardly exten ed substantially parallel walls, the inner edges of said walls aving gas -tight joints with the packing and cylinder respectively.

7 1% testimony, that I claim the foregoing as my invention, I have signed my name this -5th day of March .1924.

FINLEY R." PORTER. 

